/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Changes the type of a member variable
static void ChangeMemberVariableType ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * Blueprint, const [FName](API\Runtime\Core\UObject\FName) VariableName, const [FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) & NewPinType )